No individual for hire shall work at the installation, repair, or alteration of sheet metal for heating, steam fitting, gas fitting, oil fitting, or water fitting unless he or she is a plumbing contractor or limited contractor, or is employed by a plumbing contractor or limited contractor, who has a plumbing contractor’s license or a limited contractor’s license issued by the city.
(Ord. 1116, passed 2-25-1957; Ord. 2382, passed - -1978)